CN113603502A - Ceramic fiber filter tube forming process - Google Patents
Ceramic fiber filter tube forming process Download PDFInfo
- Publication number
- CN113603502A CN113603502A CN202110964835.9A CN202110964835A CN113603502A CN 113603502 A CN113603502 A CN 113603502A CN 202110964835 A CN202110964835 A CN 202110964835A CN 113603502 A CN113603502 A CN 113603502A
- Authority
- CN
- China
- Prior art keywords
- ceramic fiber
- fiber filter
- forming process
- filter tube
- ceramic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
- C04B35/62231—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on oxide ceramics
- C04B35/62236—Fibres based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/624—Sol-gel processing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5035—Silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Abstract
The invention relates to a ceramic fiber filter tube forming process, which comprises the following steps of preparing primary ceramic fibers; secondly, preparing a primary material of the ceramic fiber pipe body; step three, preparing nano particles; step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at the temperature of 450-plus-500 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1-1.5 mm; fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture a ceramic fiber filter pipe with the length of 1 m; when being used for exhaust-gas treatment, the granule in the dusty waste gas after the cooling is adsorbed by ceramic fiber body, reduces the emission of dusty granule, avoids causing secondary pollution, and the unique structure of silica nanotube can be handled waste gas itself in addition, adsorbs it on the one hand, and on the other hand only provides the illumination condition and just can carry out oxidative decomposition to waste gas itself.
Description
Technical Field
The invention belongs to the technical field of smoke dust filtration, and particularly relates to a ceramic fiber filter tube forming process.
Background
At present, in chemical industry, petroleum industry, metallurgy industry, electric power industry, cement industry and other industries, high-temperature dust-containing gas generated by various industrial furnaces and kilns is high in temperature, contains a large amount of dust and harmful gas, and is one of main factors causing environmental pollution, so that the high-temperature dust-containing gas needs to be dedusted.
At present, high-temperature dust removal technologies such as bag-type dust removal, wet dust removal, electrostatic dust removal, cyclone dust removal and the like have been successful in the market, but the dust removal technologies have some problems in the application process of waste gas purification. The temperature of a flue gas outlet in the industries of electric furnace smelting, coal chemical industry and the like can even reach more than 900 ℃, the most widely used bag type dust collector at present is limited by the temperature resistance of a bag type, and the dust collector can not be used at the temperature of more than 250 ℃, and generally a circulating water chilling or air cooling mode is adopted to reduce the temperature of high-temperature flue gas to below 250 ℃ and then remove dust; so remove dust through the wet process, be about to factory exhaust high temperature dusty waste gas and carry out the washing spray cooling, reduce the temperature of waste gas, the washing removes dust, but can cause the particulate matter to discharge with water together, has both wasted a large amount of water resources like this, causes secondary pollution again.
Disclosure of Invention
The invention provides a ceramic fiber filter tube forming process, aiming at solving the technical problems that particulate matters and water are discharged together when water is used for washing and dedusting, so that a large amount of water resources are wasted and secondary pollution is caused.
The purpose of the invention can be realized by the following technical scheme:
the ceramic fiber filter tube forming process comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, stirring at a constant speed, adding isopropyl ether, stirring at a constant speed of 200r/min for 30min at a speed of 150-; adding a PVP ethanol solution into the dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding anhydrous ethanol and N, N-dimethylformamide, magnetically stirring until the materials are uniformly mixed to prepare a precursor spinning solution, carrying out electrostatic spinning to prepare nascent fibers, then calcining at 1200 ℃ for 1h to prepare nascent ceramic fibers, and controlling the dosage ratio of anhydrous aluminum chloride, dichloromethane and isopropyl ether to be 0.5-0.6 g: 30 mL: 0.8-1mL, wherein the dosage ratio of the dry gel, the PVP ethanol solution, the hexadecyl trimethyl ammonium bromide, the liquid paraffin, the anhydrous ethanol and the N, N-dimethylformamide to be 10 g: 10 mL: 0.1 g: 3 mL: 2 mL;
firstly, preparing alumina gel, mixing the alumina gel with a PVP ethanol solution, adding liquid paraffin as a dispersion phase, using cetyl trimethyl ammonium bromide as a surfactant, preparing nascent fiber through electrostatic spinning, wherein the nascent fiber is the alumina gel and the PVP precursor fiber, then placing at 1200 ℃ for calcination, and decomposing the PVP precursor to prepare nascent ceramic fiber which is ceramic fiber with a porous structure;
step two, uniformly mixing water, methyl cellulose and a binder according to the weight ratio of 0.3: 55-70: 30-35 to obtain a mixed solution, adding nascent ceramic fibers, stirring at a high speed of 800r/min for 2h to obtain slurry, injecting the slurry into a suction filtration mould, carrying out vacuum filtration for 30-40min under 0.06-0.08MPa, carrying out wet demoulding after preforming to obtain a ceramic fiber tube blank, drying and curing at 70-100 ℃ for 10h, and then sintering at 1100-1200 ℃ for 4h to obtain a ceramic fiber tube body primary material, wherein the content of the nascent ceramic fibers in the slurry accounts for 35-50% of the weight of the slurry;
secondly, sintering the prepared ceramic fibers after bonding by using a bonding agent to prepare a primary ceramic fiber tube body material, wherein the bonding agent is decomposed at high temperature in the sintering process, and through holes are formed at the cross points of the primary ceramic fibers, so that the primary ceramic fiber tube body material has high porosity and gas permeability;
thirdly, ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, then connecting a direct-current power supply anode, connecting a platinum sheet serving as a counter electrode to a power supply cathode, placing the platinum sheet serving as a counter electrode in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeating the anodic oxidation for three times, combining the collected particles, and preparing nano particles;
thirdly, preparing particles from the titanium sheet in an anodic oxidation mode, wherein the particles are honeycomb-shaped silicon dioxide nanotubes, and compared with the special honeycomb structure of common nano silicon dioxide, the honeycomb-shaped silicon dioxide nanotubes have larger specific surface area, excellent adsorption performance and more adsorption sites;
step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at the temperature of 450-plus-500 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1-1.5 mm;
and then uniformly coating the honeycomb-shaped silicon dioxide nanotubes on the surface of the inner wall of the primary material of the ceramic fiber tube body, and sintering, wherein the high porosity of the primary material of the ceramic fiber tube body can facilitate the honeycomb-shaped silicon dioxide nanotubes to be sintered on the surface layer of the primary material of the ceramic fiber tube body, and finally, the prepared ceramic fiber tube body is a porous ceramic material sintered with the honeycomb-shaped silicon dioxide nanotubes.
And fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
Further: the conditions of electrostatic spinning in the first step are as follows: the liquid paraffin is used as an inner liquid, the precursor spinning solution is used as an outer liquid, the diameter of a needle head of the inner liquid is 0.3mm, the diameter of a needle head of the outer liquid is 1.0mm, the spinning parameter is that the curing distance is 10cm, and the spinning voltage is 15 kV.
Further: the PVP ethanol solution is formed by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
Further: in the second step, the binder is formed by mixing an organic binder and an inorganic binder according to the weight ratio of 1: 10.
Further: in the third step, the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.3-0.5: 95: 2.
The invention has the beneficial effects that:
the ceramic fiber filter tube comprises a ceramic fiber tube body, one end of the ceramic fiber tube body is a U-shaped end seal, the other end of the ceramic fiber tube body is provided with a flange, the ceramic fiber tube body is a porous ceramic material sintered with honeycomb-shaped silicon dioxide nanotubes, and the ceramic fiber filter tube has a special porous structure, so that the adsorption performance of particles can be greatly improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The ceramic fiber filter tube comprises a ceramic fiber tube body, one end of the ceramic fiber tube body is a U-shaped end seal, the other end of the ceramic fiber tube body is provided with a flange, and the ceramic fiber filter tube comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, adding isopropyl ether through uniform stirring, stirring at a constant speed of 150r/min for 30min, and then transferring to an oven to dry at 80 ℃ to obtain dry gel; adding a PVP ethanol solution into a dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding absolute ethyl alcohol and N, N-dimethylformamide, magnetically stirring until the mixture is uniform to prepare a precursor spinning solution, taking the liquid paraffin as an inner solution and the precursor spinning solution as an outer solution, wherein the diameter of a needle head of the inner solution is 0.3mm, the diameter of a needle head of the outer solution is 1.0mm, the spinning parameters are that the curing distance is 10cm, the spinning voltage is 15kV, performing electrostatic spinning to prepare a nascent fiber, then calcining at 1200 ℃ and keeping the temperature for 1h to prepare the nascent ceramic fiber, controlling the dosage ratio of anhydrous aluminum chloride, dichloromethane and isopropyl ether to be 0.5 g: 30 mL: 0.8mL, and adding a dry gel solution and a PVP ethanol solution, the dosage ratio of the hexadecyl trimethyl ammonium bromide to the liquid paraffin to the absolute ethyl alcohol to the N, N-dimethylformamide is 10g to 10mL to 0.1g to 3mL to 2 mL;
the PVP ethanol solution is prepared by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
Step two, uniformly mixing water, methyl cellulose and a binder according to the weight ratio of 0.3: 55: 30 to prepare a mixed solution, adding nascent ceramic fibers, stirring at a high speed of 500r/min for 2 hours to prepare a slurry, injecting the slurry into a suction filtration mold, carrying out vacuum filtration for 30 minutes under 0.06MPa, carrying out pre-forming and wet demolding to obtain a ceramic fiber tube blank, drying and curing at 70 ℃ for 10 hours, and then sintering at 1100 ℃ for 4 hours to prepare a ceramic fiber tube body primary material, wherein the content of the nascent ceramic fibers in the slurry accounts for 35% of the weight of the slurry;
the adhesive is prepared by mixing polyvinyl alcohol and aluminum dihydrogen phosphate according to the weight ratio of 1: 10.
Thirdly, ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, then connecting a direct-current power supply anode, connecting a platinum sheet serving as a counter electrode to a power supply cathode, placing the platinum sheet serving as a counter electrode in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeating the anodic oxidation for three times, combining the collected particles, and preparing nano particles;
the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.3: 95: 2.
Step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at 450 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1 mm;
and fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
Example 2
The ceramic fiber filter tube comprises a ceramic fiber tube body, one end of the ceramic fiber tube body is a U-shaped end seal, the other end of the ceramic fiber tube body is provided with a flange, and the ceramic fiber filter tube comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, adding isopropyl ether through uniform stirring, stirring at a constant speed of 150r/min for 30min, and then transferring to an oven to dry at 80 ℃ to obtain dry gel; adding a PVP ethanol solution into a dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding absolute ethyl alcohol and N, N-dimethylformamide, magnetically stirring until the mixture is uniform to prepare a precursor spinning solution, taking the liquid paraffin as an inner solution and the precursor spinning solution as an outer solution, wherein the diameter of a needle head of the inner solution is 0.3mm, the diameter of a needle head of the outer solution is 1.0mm, the spinning parameters are that the curing distance is 10cm, the spinning voltage is 15kV, performing electrostatic spinning to prepare a nascent fiber, then calcining at 1200 ℃ and keeping the temperature for 1h to prepare the nascent ceramic fiber, controlling the dosage ratio of anhydrous aluminum chloride, dichloromethane and isopropyl ether to be 0.5 g: 30 mL: 0.8mL, and adding a dry gel solution and a PVP ethanol solution, the dosage ratio of the hexadecyl trimethyl ammonium bromide to the liquid paraffin to the absolute ethyl alcohol to the N, N-dimethylformamide is 10g to 10mL to 0.1g to 3mL to 2 mL;
the PVP ethanol solution is prepared by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
Step two, uniformly mixing water, methyl cellulose and a binder according to the weight ratio of 0.3: 60: 32 to prepare a mixed solution, adding nascent ceramic fibers, stirring at a high speed of 500r/min for 2 hours to prepare a slurry, injecting the slurry into a suction filtration mould, carrying out vacuum filtration for 30 minutes under 0.06MPa, carrying out pre-forming and wet demoulding to obtain a ceramic fiber tube blank, drying and curing at 70 ℃ for 10 hours, and then sintering at 1100 ℃ for 4 hours to prepare a ceramic fiber tube body primary material, wherein the content of the nascent ceramic fibers in the slurry accounts for 40% of the weight of the slurry;
the adhesive is prepared by mixing polyvinyl alcohol and aluminum dihydrogen phosphate according to the weight ratio of 1: 10.
Thirdly, ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, then connecting a direct-current power supply anode, connecting a platinum sheet serving as a counter electrode to a power supply cathode, placing the platinum sheet serving as a counter electrode in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeating the anodic oxidation for three times, combining the collected particles, and preparing nano particles;
the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.35: 95: 2.
Step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at 450 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1.2 mm;
and fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
Example 3
The ceramic fiber filter tube comprises a ceramic fiber tube body, one end of the ceramic fiber tube body is a U-shaped end seal, the other end of the ceramic fiber tube body is provided with a flange, and the ceramic fiber filter tube comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, stirring at a constant speed, adding isopropyl ether, stirring at a constant speed of 200r/min for 30min, and then transferring to an oven to dry at 80 ℃ to obtain dry gel; adding a PVP ethanol solution into a dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding absolute ethyl alcohol and N, N-dimethylformamide, stirring magnetically until the mixture is uniform to prepare a precursor spinning solution, taking the liquid paraffin as an inner solution, taking the precursor spinning solution as an outer solution, taking the inner solution as a needle head with the diameter of 0.3mm, taking the outer solution as an outer solution with the diameter of 1.0mm, setting the spinning parameters as the curing distance of 10cm, setting the spinning voltage of 15kV, carrying out electrostatic spinning to prepare a nascent fiber, then calcining at 1200 ℃ and keeping the temperature for 1h to prepare the nascent ceramic fiber, controlling the dosage ratio of anhydrous aluminum chloride, dichloromethane and isopropyl ether to be 0.55 g: 30 mL: 1mL, and adding a dry gel solution and a PVP ethanol solution, the dosage ratio of the hexadecyl trimethyl ammonium bromide to the liquid paraffin to the absolute ethyl alcohol to the N, N-dimethylformamide is 10g to 10mL to 0.1g to 3mL to 2 mL;
the PVP ethanol solution is prepared by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
Step two, uniformly mixing water, methyl cellulose and a binder according to the weight ratio of 0.3: 65: 34 to prepare a mixed solution, adding nascent ceramic fibers, stirring at a high speed of 800r/min for 2 hours to prepare a slurry, injecting the slurry into a suction filtration mold, carrying out vacuum filtration at 0.08MPa for 40 minutes, carrying out pre-forming and wet demolding to obtain a ceramic fiber tube blank, drying and curing at 100 ℃ for 10 hours, and then sintering at 1200 ℃ for 4 hours to prepare a ceramic fiber tube body primary material, wherein the content of the nascent ceramic fibers in the slurry accounts for 45 percent of the weight of the slurry;
the adhesive is prepared by mixing polyvinyl alcohol and aluminum dihydrogen phosphate according to the weight ratio of 1: 10.
Thirdly, ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, then connecting a direct-current power supply anode, connecting a platinum sheet serving as a counter electrode to a power supply cathode, placing the platinum sheet serving as a counter electrode in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeating the anodic oxidation for three times, combining the collected particles, and preparing nano particles;
the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.45: 95: 2.
Step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at 500 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1.4 mm;
and fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
Example 4
The ceramic fiber filter tube comprises a ceramic fiber tube body, one end of the ceramic fiber tube body is a U-shaped end seal, the other end of the ceramic fiber tube body is provided with a flange, and the ceramic fiber filter tube comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, stirring at a constant speed, adding isopropyl ether, stirring at a constant speed of 200r/min for 30min, and then transferring to an oven to dry at 80 ℃ to obtain dry gel; adding a PVP ethanol solution into a dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding absolute ethyl alcohol and N, N-dimethylformamide, stirring magnetically until the mixture is uniform to prepare a precursor spinning solution, taking the liquid paraffin as an inner solution, taking the precursor spinning solution as an outer solution, taking the inner solution as a needle head with the diameter of 0.3mm, taking the outer solution as an outer solution with the diameter of 1.0mm, setting the spinning parameters as the curing distance of 10cm, setting the spinning voltage of 15kV, carrying out electrostatic spinning to prepare a nascent fiber, then calcining at 1200 ℃ and keeping the temperature for 1h to prepare the nascent ceramic fiber, controlling the dosage ratio of anhydrous aluminum chloride, dichloromethane and isopropyl ether to be 0.6 g: 30 mL: 1mL, and adding a dry gel solution and a PVP ethanol solution, the dosage ratio of the hexadecyl trimethyl ammonium bromide to the liquid paraffin to the absolute ethyl alcohol to the N, N-dimethylformamide is 10g to 10mL to 0.1g to 3mL to 2 mL;
the PVP ethanol solution is prepared by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
Step two, uniformly mixing water, methyl cellulose and a binder according to the weight ratio of 0.3: 70: 35 to prepare a mixed solution, adding nascent ceramic fibers, stirring at a high speed of 800r/min for 2 hours to prepare a slurry, injecting the slurry into a suction filtration mold, carrying out vacuum filtration at 0.08MPa for 40 minutes, carrying out pre-forming and wet demolding to obtain a ceramic fiber tube blank, drying and curing at 100 ℃ for 10 hours, and then sintering at 1200 ℃ for 4 hours to prepare a ceramic fiber tube body primary material, wherein the content of the nascent ceramic fibers in the slurry accounts for 50% of the weight of the slurry;
the adhesive is prepared by mixing polyvinyl alcohol and aluminum dihydrogen phosphate according to the weight ratio of 1: 10.
Thirdly, ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, then connecting a direct-current power supply anode, connecting a platinum sheet serving as a counter electrode to a power supply cathode, placing the platinum sheet serving as a counter electrode in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeating the anodic oxidation for three times, combining the collected particles, and preparing nano particles;
the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.5: 95: 2.
Step four, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at 500 ℃ to prepare the ceramic fiber tube body, and controlling the coating thickness to be 1.5 mm;
and fifthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
Comparative example 1
In this comparative example, compared with example 1, no particles were produced, and a ceramic fiber tube starting material was used as a ceramic fiber tube.
Comparative example 2
This comparative example is a ceramic fiber filter tube manufactured by Jiangsu, a company on the market.
The air permeability and the exhaust gas treatment effect of the ceramic fiber filter tubes of examples 1 to 4 and comparative examples 1 to 2 were measured, and the results are shown in the following table:
and (3) effect testing: experiment mixed gas was passed through the ceramic fiber filter tubes prepared in examples 1 to 4 and comparative examples 1 to 2, respectively, and the mixed gas had the following composition: dust concentration 443.4 +/-62.5 mg/m3(ii) a Benzene 42.5 +/-8.2 mg/m3；C10-C40 135.25±12.5mg/m3Test itThe removal rate of each component.
From the above table, it can be seen that the ceramic fiber filter tube prepared by the invention has a high permeability coefficient, and not only has a very high removal rate for dust particles in the exhaust gas, but also has a high removal rate for organic components in the exhaust gas.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (9)
1. The ceramic fiber filter tube forming process is characterized by comprising the following steps: the method comprises the following steps:
firstly, adding anhydrous aluminum chloride into dichloromethane, adding isopropyl ether through uniform stirring, stirring at a uniform speed for 30min, and drying to obtain dry gel; adding a PVP ethanol solution into the dry gel, adding hexadecyl trimethyl ammonium bromide and liquid paraffin, stirring at a constant speed for 1h, then sequentially adding absolute ethyl alcohol and N, N-dimethylformamide, stirring by magnetic force until the mixture is uniformly mixed to prepare a precursor spinning solution, carrying out electrostatic spinning to prepare nascent fibers, and then calcining at 1200 ℃ for heat preservation for 1h to prepare nascent ceramic fibers;
step two, uniformly mixing water, methylcellulose and a binder to obtain a mixed solution, adding nascent ceramic fibers, stirring at a high speed for 2 hours to obtain a slurry, performing vacuum filtration, performing wet demolding to obtain a ceramic fiber tube blank, drying and curing for 10 hours, and sintering to obtain a ceramic fiber tube body primary material;
step three, uniformly coating the nano particles on the inner wall surface of the primary material of the ceramic fiber tube body, calcining for 4 hours at the temperature of 450-;
and fourthly, carrying out U-shaped end sealing on one end of the ceramic fiber pipe body, and fixing a mounting flange at the other end of the ceramic fiber pipe body to manufacture the ceramic fiber filter pipe with the length of 1 m.
2. The ceramic fiber filter tube forming process of claim 1, wherein: the nano-particles are prepared by the following steps: the method comprises the following steps of ultrasonically cleaning a titanium sheet in acetone, absolute ethyl alcohol and deionized water for 10min, drying, connecting a direct-current power supply anode, connecting a platinum sheet to a direct-current power supply cathode, placing the platinum sheet in an electrolyte, carrying out anodic oxidation at room temperature under the condition of 50V for 30min, ultrasonically cleaning the titanium sheet, collecting surface particles of the titanium sheet, repeatedly anodizing for three times, and combining the collected particles.
3. The ceramic fiber filter tube forming process of claim 1, wherein: the conditions of electrostatic spinning in the first step are as follows: the liquid paraffin is used as an inner liquid, the precursor spinning solution is used as an outer liquid, the diameter of a needle head of the inner liquid is 0.3mm, the diameter of a needle head of the outer liquid is 1.0mm, the spinning parameter is that the curing distance is 10cm, and the spinning voltage is 15 kV.
4. The ceramic fiber filter tube forming process of claim 1, wherein: in the first step, the dosage ratio of the anhydrous aluminum chloride, the dichloromethane and the isopropyl ether is controlled to be 0.5-0.6 g: 30 mL: 0.8-1mL, and the dosage ratio of the xerogel, the PVP ethanol solution, the hexadecyl trimethyl ammonium bromide, the liquid paraffin, the anhydrous ethanol and the N, N-dimethylformamide is controlled to be 10 g: 10 mL: 0.1 g: 3 mL: 2 mL.
5. The ceramic fiber filter tube forming process of claim 1, wherein: the PVP ethanol solution is formed by mixing PVP and absolute ethyl alcohol according to the dosage ratio of 0.5 g: 10 mL.
6. The ceramic fiber filter tube forming process of claim 1, wherein: in the second step, the binder is formed by mixing an organic binder and an inorganic binder according to the weight ratio of 1: 10.
7. The ceramic fiber filter tube forming process of claim 1, wherein: the content of the primary ceramic fibers in the slurry accounts for 35-50% of the weight of the slurry.
8. The ceramic fiber filter tube forming process of claim 1, wherein: the pressure of vacuum filtration is 0.06-0.08MPa, and the filtration time is 30-40 min.
9. A ceramic fiber filter tube forming process according to claim 2, wherein: the electrolyte is formed by mixing ammonium fluoride, ethylene glycol and deionized water according to the volume ratio of 0.3-0.5: 95: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110964835.9A CN113603502A (en) | 2021-08-19 | 2021-08-19 | Ceramic fiber filter tube forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110964835.9A CN113603502A (en) | 2021-08-19 | 2021-08-19 | Ceramic fiber filter tube forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113603502A true CN113603502A (en) | 2021-11-05 |
Family
ID=78309132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110964835.9A Pending CN113603502A (en) | 2021-08-19 | 2021-08-19 | Ceramic fiber filter tube forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113603502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870834A (en) * | 2022-05-17 | 2022-08-09 | 安徽紫朔环境工程技术有限公司 | Wear-resistant catalyst coating for ceramic filter tube |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050176329A1 (en) * | 2002-09-12 | 2005-08-11 | Pierre Olry | Three-dimensional fiber structure of refractory fibers, a method of making it, and thermostructural composite materials, in particular friction parts, made therefrom |
| WO2008056891A1 (en) * | 2006-11-10 | 2008-05-15 | Korea Basic Science Institute | Methods for manufacturing li-doped silica nanotube using anodic aluminum oxide template and use of the li-doped silica nanotube for energy storage |
| CN101185817A (en) * | 2007-12-12 | 2008-05-28 | 天津工业大学 | Method for preparing nano alumina fiber film material |
| CN101230479A (en) * | 2007-11-09 | 2008-07-30 | 清华大学 | Method for preparing gradient TiO2 nano-tube arrry thin film by using multistep anodic oxidation process |
| CN101982581A (en) * | 2010-11-18 | 2011-03-02 | 东华大学 | Method for preparing aluminum oxide nanofiber by electrostatic spinning |
| CN102167567A (en) * | 2010-12-21 | 2011-08-31 | 山东大学 | Flexible alumina ceramic fiber and preparation method thereof |
| US20110266213A1 (en) * | 2010-05-03 | 2011-11-03 | Korea Institute Of Science And Technology | Ultrafine continuous fibrous ceramic filter and method of manufacturing same |
| CN102758310A (en) * | 2012-07-24 | 2012-10-31 | 山东大学 | Flexible gamma-Al2O3 fiber membrane and preparing method thereof |
| CN103011778A (en) * | 2012-12-14 | 2013-04-03 | 山东大学 | Porous alumina nano fiber and preparation method thereof |
| CN107224883A (en) * | 2017-06-14 | 2017-10-03 | 江苏久朗高科技股份有限公司 | The technique that a kind of method of electrostatic spinning prepares ceramic separation film |
| CN107893263A (en) * | 2017-11-23 | 2018-04-10 | 中南大学 | It is a kind of be applied to prepare the continuous poriferous alumina-based ceramic of high homogeneous it is ultra-fine/spin finish aid of nanofiber |
| CN110038452A (en) * | 2019-04-23 | 2019-07-23 | 东南大学 | Load the ceramic nanofibers base compound purifying film and its preparation method and application of silver |
| CN110252277A (en) * | 2019-07-01 | 2019-09-20 | 南通大学 | A kind of preparation method of cleaning catalyst for tail gases of automobiles fiber carrier |
| CN111118959A (en) * | 2020-01-13 | 2020-05-08 | 山东民烨耐火纤维有限公司 | Ceramic fiber paper with micro-nano alumina coating coated on surface and preparation method thereof |
| CN111618978A (en) * | 2020-06-03 | 2020-09-04 | 安徽紫朔环境工程技术有限公司 | Forming equipment for manufacturing ceramic filter tube |
| CN113134893A (en) * | 2020-01-20 | 2021-07-20 | 西部宝德科技股份有限公司 | Preparation method of ceramic fiber filter tube for high-temperature flue gas purification |
| CN113151934A (en) * | 2021-03-09 | 2021-07-23 | 中国人民解放军国防科技大学 | Preparation method of superfine SiBCN ceramic fiber |
-
2021
- 2021-08-19 CN CN202110964835.9A patent/CN113603502A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050176329A1 (en) * | 2002-09-12 | 2005-08-11 | Pierre Olry | Three-dimensional fiber structure of refractory fibers, a method of making it, and thermostructural composite materials, in particular friction parts, made therefrom |
| WO2008056891A1 (en) * | 2006-11-10 | 2008-05-15 | Korea Basic Science Institute | Methods for manufacturing li-doped silica nanotube using anodic aluminum oxide template and use of the li-doped silica nanotube for energy storage |
| CN101230479A (en) * | 2007-11-09 | 2008-07-30 | 清华大学 | Method for preparing gradient TiO2 nano-tube arrry thin film by using multistep anodic oxidation process |
| CN101185817A (en) * | 2007-12-12 | 2008-05-28 | 天津工业大学 | Method for preparing nano alumina fiber film material |
| US20110266213A1 (en) * | 2010-05-03 | 2011-11-03 | Korea Institute Of Science And Technology | Ultrafine continuous fibrous ceramic filter and method of manufacturing same |
| KR20110121836A (en) * | 2010-05-03 | 2011-11-09 | 한국과학기술연구원 | Ultrafine continuous fiber-based ceramic filter and preparation thereof |
| CN101982581A (en) * | 2010-11-18 | 2011-03-02 | 东华大学 | Method for preparing aluminum oxide nanofiber by electrostatic spinning |
| CN102167567A (en) * | 2010-12-21 | 2011-08-31 | 山东大学 | Flexible alumina ceramic fiber and preparation method thereof |
| CN102758310A (en) * | 2012-07-24 | 2012-10-31 | 山东大学 | Flexible gamma-Al2O3 fiber membrane and preparing method thereof |
| CN103011778A (en) * | 2012-12-14 | 2013-04-03 | 山东大学 | Porous alumina nano fiber and preparation method thereof |
| CN107224883A (en) * | 2017-06-14 | 2017-10-03 | 江苏久朗高科技股份有限公司 | The technique that a kind of method of electrostatic spinning prepares ceramic separation film |
| CN107893263A (en) * | 2017-11-23 | 2018-04-10 | 中南大学 | It is a kind of be applied to prepare the continuous poriferous alumina-based ceramic of high homogeneous it is ultra-fine/spin finish aid of nanofiber |
| CN110038452A (en) * | 2019-04-23 | 2019-07-23 | 东南大学 | Load the ceramic nanofibers base compound purifying film and its preparation method and application of silver |
| CN110252277A (en) * | 2019-07-01 | 2019-09-20 | 南通大学 | A kind of preparation method of cleaning catalyst for tail gases of automobiles fiber carrier |
| CN111118959A (en) * | 2020-01-13 | 2020-05-08 | 山东民烨耐火纤维有限公司 | Ceramic fiber paper with micro-nano alumina coating coated on surface and preparation method thereof |
| CN113134893A (en) * | 2020-01-20 | 2021-07-20 | 西部宝德科技股份有限公司 | Preparation method of ceramic fiber filter tube for high-temperature flue gas purification |
| CN111618978A (en) * | 2020-06-03 | 2020-09-04 | 安徽紫朔环境工程技术有限公司 | Forming equipment for manufacturing ceramic filter tube |
| CN113151934A (en) * | 2021-03-09 | 2021-07-23 | 中国人民解放军国防科技大学 | Preparation method of superfine SiBCN ceramic fiber |
Non-Patent Citations (2)
| Title |
|---|
| ABDUL-MAJEED AZAD: "Fabrication of transparent alumina (Al2O3) nanofibers by electrospinning", 《MATERIALS SCIENCE AND ENGINEERING A》 * |
| 冯丽萍等: "《薄膜技术与应用》", 28 February 2016, 西北工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870834A (en) * | 2022-05-17 | 2022-08-09 | 安徽紫朔环境工程技术有限公司 | Wear-resistant catalyst coating for ceramic filter tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110256059B (en) | High-flux ceramic flat membrane and preparation method thereof | |
| CN103463871B (en) | Membrane-laminated fiberglass filter medium capable of denitration and dust removal | |
| WO2004050214A1 (en) | Method for producing multi-layered ceramic filter and ceramic filter using the same | |
| CN108671905B (en) | Preparation method of photocatalyst for sewage treatment | |
| CN102807384B (en) | Preparation method of high-porosity silicon-carbide porous ceramics | |
| CN108579721B (en) | Preparation method of photocatalyst for air VOC treatment | |
| CN103157328A (en) | PM 2.5 micropore ceramic filtering element and preparation technology | |
| CN108440008B (en) | High-porosity ceramic filter material and preparation method thereof | |
| CN113603502A (en) | Ceramic fiber filter tube forming process | |
| CN107915475A (en) | A kind of gradient pore high temperature filtration ceramic tube and preparation method thereof | |
| CN106747599A (en) | A kind of wall-flow honeycomb ceramic filter and preparation method thereof | |
| CN102010187A (en) | Ceramic membrane for porous ceramic filter pipe and modified preparation method thereof | |
| CN113501707B (en) | High-temperature resistant ceramic fiber filter tube for waste gas treatment | |
| CN110304937A (en) | A kind of ceramic honeycomb filter carrier and preparation method thereof | |
| CN111285702A (en) | Ceramic fiber filter membrane material and preparation method thereof | |
| CN114605168A (en) | Preparation method of air filter material based on pansy porous ceramic and zeolite | |
| CN113731421A (en) | Coating process of CO monolithic catalyst and preparation method thereof | |
| CN112588257B (en) | Ordered mesoporous silicon-glass fiber paper composite material and preparation method and application thereof | |
| CN110694353B (en) | Ceramic fiber catalytic filter element and integrated preparation method thereof | |
| CN113134893A (en) | Preparation method of ceramic fiber filter tube for high-temperature flue gas purification | |
| KR20110138241A (en) | Honeycomb catalyst substrate and method for producing same | |
| CN102924068B (en) | Wall-flow honeycomb ceramic filter for high-temperature exhaust gas purification, and preparation method thereof | |
| CN112299866A (en) | Method for preparing industrial high-temperature flue gas filtering pipeline by using ceramic matrix composite material | |
| KR101807833B1 (en) | A process for the preparation of ceramic honeycomb catalyst supporter having a low coefficient of expansion and the ceramic honeycomb catalyst supporter prepared therefrom | |
| JP2002143615A (en) | Porous ceramic honeycomb structural body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211105 |
|
| RJ01 | Rejection of invention patent application after publication |